Tub



FIG. 1 is a top front right-side perspective view of a tub showing my new design;

FIG. 2 is a bottom rear right-side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a front end elevation view thereof; and,

FIG. 8 is a rear end elevation view thereof. 

The ornamental design for a tub, as shown and described. 